defender::safe PHP Method

    public static function safe()
    {
        if (!defined("FUSION_NULL")) {
            return TRUE;
        }
        return FALSE;
    }

 protected function post_tags()
 {
     global $aidlink;
     if (isset($_POST['save_tag'])) {
         $this->data = array('tag_id' => isset($_GET['tag_id']) && isnum($_GET['tag_id']) ? intval($_GET['tag_id']) : 0, 'tag_title' => form_sanitizer($_POST['tag_title'], '', 'tag_title'), 'tag_language' => form_sanitizer($_POST['tag_language'], '', 'tag_language'), 'tag_color' => form_sanitizer($_POST['tag_color'], '', 'tag_color'), 'tag_description' => form_sanitizer($_POST['tag_description'], '', 'tag_description'), 'tag_status' => isset($_POST['tag_status']) && isnum($_POST['tag_status']) ? intval($_POST['tag_status']) : 0);
         if (\defender::safe()) {
             if (!empty($this->data['tag_id'])) {
                 /**
                  * Update
                  */
                 dbquery_insert(DB_FORUM_TAGS, $this->data, "update");
                 addNotice('success', self::$locale['forum_tag_0105']);
                 redirect(FUSION_SELF . $aidlink . '&section=ft');
             } else {
                 /**
                  * Save New
                  */
                 dbquery_insert(DB_FORUM_TAGS, $this->data, "save");
                 addNotice('success', self::$locale['forum_tag_0106']);
                 redirect(FUSION_SELF . $aidlink . '&section=ft');
             }
         }
     }
     if (isset($_GET['delete']) && isnum($_GET['delete'])) {
         $result = dbquery("DELETE FROM " . DB_FORUM_TAGS . " WHERE tag_id='" . $_GET['delete'] . "'");
         if ($result) {
             addNotice("success", self::$locale['forum_tag_0107']);
             redirect(FUSION_SELF . $aidlink . '&section=ft');
         }
     }
 }